Dust control device and method in construction process of super-hydrophobic coating

Abstract

The invention discloses a dust control device in the construction process of a super-hydrophobic coating, and relates to the technical field of dust removal equipment, the dust control device comprises a dust collector and a negative pressure dust removal box, the dust collector is in through connection with the negative pressure dust removal box through a corrugated pipe, and the negative pressure dust removal box comprises a negative pressure box, a dust collection panel, a rotary sweeper and a bottom suction assembly; the negative pressure box comprises a sealing cover, a reflecting plate and an airflow adjusting plate, the dust collection panel comprises a front panel, an accelerating pipe and a partition plate, the rotary sweeper comprises a lantern ring, a sweeping rod and a first fan blade, the rotary sweeper is movably installed on the accelerating pipe to sweep the inner end face of the accelerating pipe, and the bottom suction assembly comprises a direction adjusting rotating roller, an electric heating wire and a third motor. The bottom suction assembly is installed at the lower end of the airflow adjusting plate. The efficient gas-solid separation device has the functions of efficient gas-solid separation, rotary self-cleaning, multidirectional suction adjustment and hot air drying, and the problems that a filter screen of equipment is prone to blockage, the equipment loses efficacy due to scale deposition and the suction direction is single are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, specifically to a dust control device and method for the construction process of superhydrophobic coatings. Background Technology

[0002] During the application of superhydrophobic coatings, the paint droplets and dust generated by high-pressure spraying can easily clog the filters of traditional dust removal devices. Simultaneously, the paint adheres to the inner walls of the equipment, forming scale and affecting its lifespan. Existing devices lack an online self-cleaning mechanism, requiring frequent shutdowns for cleaning. This not only reduces the continuity of construction but also disrupts the airflow field, affecting the coating's microstructure and causing defects such as surface particles and pitting, significantly weakening its hydrophobic properties.

[0003] Furthermore, traditional dust collection devices have a fixed suction direction, which cannot dynamically adapt to the needs of spraying operations: during the spraying stage, it is necessary to capture the dust that is raised and falling forward, and when moving the area, it is necessary to clean the dust on the ground backward. The single mode leads to blind spots in dust collection; if the sucked wet and sticky coating is not dried in time, it is easy to solidify and block the pipes, and it lacks automated movement function, relying on manual operation, which leads to serious secondary pollution of the ground, further affecting the adhesion and smoothness of the coating. Therefore, a dust control device and method for the construction process of superhydrophobic coating is needed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a dust control device and method for the construction process of superhydrophobic coatings, which has the functions of efficient gas-solid separation, rotary self-cleaning, multi-directional suction adjustment and hot air drying, effectively solving the problems of easy clogging of equipment filters, equipment failure due to scale buildup and single suction direction.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dust control device during the construction of a superhydrophobic coating, comprising a vacuum cleaner and a negative pressure dust collection box, wherein the vacuum cleaner is connected to the negative pressure dust collection box through a corrugated pipe, and the negative pressure dust collection box comprises a negative pressure box, a dust collection panel, a rotary cleaner and a bottom suction assembly; The negative pressure box includes a sealing cover, a reflector, and an airflow regulating plate. The dust collection panel includes a front panel, an acceleration tube, and a partition. The rotary cleaner includes a collar, a cleaning rod, and a first fan blade. The rotary cleaner is movably mounted on the acceleration tube to clean its inner end face. The bottom suction assembly includes a directional roller, a heating wire, and a third motor. The bottom suction assembly is mounted at the lower end of the airflow regulating plate.

[0006] As a preferred dust control device in the superhydrophobic coating construction process of the present invention, the back of the front panel is provided with an acceleration tube that communicates with the negative pressure box, the inner end face of the acceleration tube is provided with a spiral guide groove, and the reflector is installed on the inner end face of the spiral guide groove.

[0007] As a preferred dust control device in the superhydrophobic coating construction process of the present invention, the partition is sleeved on the accelerating tube, and a negative pressure cavity is formed between the partition, the sealing cover and the front panel. The middle part of the accelerating tube is recessed inward to form a throat. The bottom of the throat is provided with a suction hole that communicates with the negative pressure cavity. The bottom of the negative pressure cavity is provided with an arc-shaped adjustment groove for installing the directional roller. The top of the arc-shaped adjustment groove is provided with a second pressure adjustment hole that communicates with the negative pressure cavity. V-shaped flow channels are uniformly arranged axially inside the directional roller.

[0008] As a preferred dust control device in the superhydrophobic coating construction process of the present invention, the side end face of the directional roller is provided with a rotating shaft, the third motor is fixedly installed on the outer end face of the sealing cover to drive the rotating shaft, the top of the arc-shaped adjustment groove is provided with a pressure-stabilizing guide groove extending along the axial direction of the directional roller, and an electric heating wire is provided inside the directional roller.

[0009] As a preferred dust control device in the superhydrophobic coating construction process of the present invention, the airflow regulating plate is installed on the bottom upper surface of the negative pressure chamber and slidably connected to the sealing cover. The bottom upper surface of the sealing cover is provided with a wire protrusion that fits with the airflow regulating plate. The airflow regulating plate is provided with a first pressure regulating hole corresponding to the position of the second pressure regulating hole. A second motor is provided in the negative pressure chamber. A rack is provided on the upper surface of the airflow regulating plate. A third gear that meshes with the rack is provided on the output shaft of the second motor.

[0010] As a preferred dust control device in the superhydrophobic coating construction process of the present invention, the collar is sleeved on the acceleration tube and rotatably connected thereto, the cleaning rod is fixedly installed on the collar, the outer end face of the cleaning rod is provided with a flexible scraper that fits against the inner end face of the acceleration tube, and the first fan blade is evenly installed on the front end face of the collar.

[0011] As a preferred dust control device in the superhydrophobic coating construction process of the present invention, the end of the cleaning rod is provided with an inner stabilizing ring, the front end face of the inner stabilizing ring is uniformly provided with a second fan blade, the cleaning rod has a spiral structure, and the spiral angle of the cleaning rod is the same as the spiral angle of the spiral guide groove. The inner end face of the accelerating tube and the front end face of the reflector are sprayed with a superhydrophobic coating.

[0012] As a preferred dust control device in the superhydrophobic coating construction process of the present invention, the bottom of the negative pressure box is provided with a drive frame, the drive frame includes a support frame, a drive shaft, rollers and a first motor, the first motor is fixedly installed on the support frame to drive the drive shaft, the rollers are installed on the bottom of the support frame and rotatably connected to it, a second gear is provided on the side end face of the rollers, and a first gear is provided on the drive shaft to mesh with the second gear.

[0013] Step 1, Equipment Debugging and Negative Pressure Establishment: Connect the vacuum cleaner to the negative pressure box of the negative pressure dust collection box through the corrugated pipe. After checking the sealing status, start the vacuum cleaner to quickly form a stable negative pressure in the negative pressure box. The dust and paint droplets generated during construction are sucked in through the vacuum panel and initially collected into the negative pressure box, completing the basic work of gas-solid separation. Step 2, Rotary cleaning and anti-adhesion protection: During the negative pressure suction process, the airflow drives the rotary cleaner to rotate and clean the relevant areas of the dust collection panel and acceleration tube through the cleaning rod, to prevent dust and paint from adhering, ensure smooth airflow channels, and ensure stable dust removal efficiency. Step 3, Coordinating Directional Suction and Airflow: Based on the needs of the spraying area, the suction direction is adjusted through the bottom suction component. During spraying, dust falling in front is suctioned, and when the area is expanded, dust on the ground behind is suctioned, so as to achieve precise dust capture at different construction stages and improve the cleanliness of the construction environment. Step 4: Synchronization of negative pressure adjustment and mobile dust removal: Adjust the negative pressure intensity through the airflow regulating plate to adapt to different dust removal scenarios. At the same time, use the drive structure to move the negative pressure dust removal box with the spraying progress to achieve simultaneous spraying and dust removal, ensuring that there is no dust residue in the construction area. Step 5: Finishing and cleaning up waste: After the construction is completed, turn off the vacuum cleaner and related components, open the waste collection structure of the negative pressure dust collector, clean up the collected dust and waste, check and clean the key components of the equipment, and prepare for the next use.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, through an innovative negative pressure box structure design and multi-component collaboration, achieves efficient dust separation and self-cleaning during the application of superhydrophobic coatings. Specifically, when the vacuum cleaner is started, a negative pressure environment is created inside the negative pressure box. External airflow carrying dust particles enters through the acceleration tube. The spiral guide groove set on the inner end face of the acceleration tube forces the airflow to form a high-speed rotating spiral channel. Centrifugal force is used to separate the denser dust particles from the airflow, causing them to collide with the reflector surface and slide into the waste collection chamber. The lighter airflow enters the vacuum cleaner through the suction pipe. This structure effectively solves the problems of filter clogging and small dust removal area caused by direct suction in traditional vacuum cleaners. At the same time, the rotating cleaning... The device is installed on the accelerator tube. The first fan blade, which is evenly distributed at the front end of the collar, is blown by the airflow when it is reversed, causing the collar and the spiral cleaning rod to rotate. The flexible scraper on the outer end face of the cleaning rod continuously scrapes the inner end face of the accelerator tube. Combined with the design that perfectly matches the spiral angle of the cleaning rod with the spiral guide groove, as well as the enhancement of rotational kinetic energy by the inner stabilizing ring and the second fan blade, it is ensured that the spiral airflow effect will not be affected by the adhesion of the coating on the inner wall of the accelerator tube. In addition, the super-hydrophobic coating sprayed on the inner end face of the accelerator tube and the surface of the reflector further reduces the adhesion of dirt. Thus, the airflow-driven self-cleaning structure maintains the gas-solid separation efficiency for a long time, solving the industry pain point of the degradation of separation performance caused by the accumulation of dirt on the inner wall during equipment operation.

[0015] 2. This invention achieves precise control over settled dust and suspended coatings by combining the multi-mode adjustment of the bottom suction component with hot air drying, significantly improving the construction quality of the superhydrophobic coating. Specifically, the bottom suction component includes a directional roller, a heating wire, and a third motor. V-shaped channels are evenly arranged axially within the directional roller and installed in an arc-shaped adjustment groove at the bottom of the negative pressure chamber. When the third motor drives the directional roller to rotate, the V-shaped channels can form communication paths in different directions with the second pressure regulating holes. During spraying, the drive frame moves the negative pressure box, causing the bottom holes of the V-shaped channels to face obliquely forward, sucking up the dust stirred up by the airflow during spraying, while simultaneously accelerating airflow on the coating surface to promote drying. When it is necessary to expand the spraying area... Rotating the directional roller causes the bottom holes of the V-shaped flow channel to face obliquely backward, sucking up accumulated dust on the ground to improve the surface smoothness. During the alternating process, the airflow direction in the V-shaped flow channel reverses, generating a backflow effect, effectively preventing flow channel blockage. In addition, the heating wire installed in the directional roller heats the airflow entering the negative pressure chamber. The hot airflow quickly hardens and dries the small amount of suspended coating that is sucked in, reducing the stickiness of the waste residue and preventing the vacuum cleaner filter from clogging. The airflow regulating plate is driven by a second motor to slide the rack, which can precisely adjust the relative overlap area of ​​the first and second pressure regulating holes, realizing stepless adjustment of the bottom suction negative pressure to distribute the suction pressure at the front and bottom. This solves the technical problems that a single suction direction cannot meet the needs of each stage of spraying and that wet and sticky waste is prone to clogging the equipment.

[0016] 3. This invention, through the integrated drive frame and the collaborative work of multiple components, achieves automated movement of the spraying area and efficient waste collection, significantly improving construction continuity and environmental cleanliness. Specifically, the drive frame includes a support frame, a drive shaft, rollers, and a first motor. The first motor drives the negative pressure box forward and backward along the spraying direction by meshing a first gear with a second gear on the side end face of the rollers. After spraying an area, the drive frame automatically moves the negative pressure box backward. During the backward movement, the bottom suction component continuously adsorbs and removes dust from the ground, ensuring that the ground in the subsequent spraying area always maintains a high gloss, thereby improving the adhesion and smoothness of the superhydrophobic coating. At the same time, a drain is installed at the bottom of the waste collection chamber formed between the reflector and the negative pressure box. The slag baffle and reflector feature a sloping structure at the bottom and top, naturally guiding the solid particles separated by impact towards the slag discharge baffle. This achieves efficient separation of airflow and waste slag. After the work is completed, the slag discharge baffle can be opened directly for cleaning, making operation convenient. In addition, the guide wire protrusion at the bottom of the negative pressure box slides in conjunction with the airflow regulating plate to ensure the stability of the adjustment process. The entire device, through the organic integration of the drive frame, negative pressure box, dust collection panel, rotary sweeper, and bottom suction component, forms an automated dust control system that integrates dust collection, separation, self-cleaning, hot air drying, and mobile cleaning. This solves a series of engineering application problems in the construction of large-scale superhydrophobic coatings, such as low efficiency of manual mobile equipment, difficulty in controlling secondary pollution on the ground, and cumbersome waste cleaning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the negative pressure dust collector structure of the present invention; Figure 3 This is an exploded view of the negative pressure dust collector of the present invention; Figure 4 This is a front view of the negative pressure dust collector of the present invention; Figure 5 For the present invention Figure 4 Cross-sectional view of the middle section (BB); Figure 6 This is a schematic diagram of the vacuum panel and the rotary cleaner in their working state according to the present invention; Figure 7 This is a schematic diagram of the rotary sweeper structure of the present invention; Figure 8 This is a schematic diagram of the internal transmission structure of the drive frame of the present invention; Figure 9 For the present invention Figure 5 Enlarged view at point C; Figure 10 This is a schematic diagram of the bottom suction component structure of the present invention; Figure 11 For the present invention Figure 3 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Vacuum cleaner; 2. Negative pressure dust collection box; 3. Negative pressure box; 301. Sealing cover; 302. Air extraction pipe; 303. Reflector; 304. Negative pressure chamber; 305. Airflow regulating plate; 306. First pressure regulating hole; 307. Second motor; 308. Third gear; 309. Rack; 310. Guide ridge; 311. Second pressure regulating hole; 312. Arc-shaped regulating groove; 313. Pressure stabilizing guide groove; 314. Waste collection chamber; 315. Slag discharge baffle; 4. Dust collection panel; 401. Front panel; 402. Accelerator pipe; 403. Throat; 404. Suction hole; 405. Spiral guide channel; 406. Baffle plate; 5. Rotary sweeper; 501. Collar ring; 502. Sweeping bar; 503. First fan blade; 504. Flexible scraper; 505. Inner stabilizing ring; 506. Second fan blade; 6. Drive frame; 601. Support frame; 602. Drive shaft; 603. Roller; 604. First motor; 605. First gear; 606. Second gear; 7. Bottom suction assembly; 701. Directional roller; 702. V-shaped flow channel; 703. Rotating shaft; 704. Third motor; 705. Heating wire. Detailed Implementation

[0019] Example 1 Please see Figures 1-11 A dust control device for superhydrophobic coating construction process includes a vacuum cleaner 1 and a negative pressure dust collection box 2. The vacuum cleaner 1 is connected to the negative pressure dust collection box 2 through a corrugated pipe. The negative pressure dust collection box 2 includes a negative pressure box 3, a dust collection panel 4, a rotary cleaner 5 and a bottom suction component 7. The negative pressure box 3 includes a sealing cover 301, a reflector 303, and an airflow regulating plate 305. The dust collection panel 4 includes a front panel 401, an acceleration tube 402, and a partition 406. The rotary cleaner 5 includes a collar 501, a cleaning rod 502, and a first fan blade 503. The rotary cleaner 5 is movably mounted on the acceleration tube 402 to clean its inner end face. The bottom suction assembly 7 includes a directional roller 701, a heating wire 705, and a third motor 704. The bottom suction assembly 7 is mounted at the lower end of the airflow regulating plate 305.

[0020] Furthermore, the back of the front panel 401 is provided with an acceleration tube 402 that communicates with the negative pressure box 3. The inner end face of the acceleration tube 402 is provided with a spiral guide groove 405, and the reflector plate 303 is installed on the inner end face of the spiral guide groove 405.

[0021] When the negative pressure dust collection box 2 is connected to the vacuum cleaner 1, the vacuum cleaner 1 draws the negative pressure dust collection box 2 into a negative pressure, so that the external airflow passes through the acceleration tube 402 and enters the interior of the negative pressure box 3. When the airflow passes through the spiral guide groove 405, a spiral airflow is formed, which causes the sucked dust particles and paint to mix and then separate from the airflow under the action of centrifugal force. After hitting the reflector plate 303, they slide into the waste collection chamber 314.

[0022] Furthermore, a partition 406 is fitted onto the acceleration tube 402, and a negative pressure cavity 304 is formed between the partition 406, the sealing cover 301, and the front panel 401. The middle part of the acceleration tube 402 is recessed inward to form a throat 403. A suction hole 404 communicating with the negative pressure cavity 304 is provided at the bottom of the throat 403. An arc-shaped adjustment groove 312 for installing the directional roller 701 is provided at the bottom of the negative pressure cavity 304. A second pressure regulating hole 311 communicating with the negative pressure cavity 304 is provided at the top of the arc-shaped adjustment groove 312. V-shaped flow channels 702 are uniformly arranged axially inside the directional roller 701.

[0023] The acceleration tube 402 is recessed inward in the middle to form a Venturi tube. When the airflow passes through the throat 403, the airflow speed increases, causing the suction hole 404 to draw inward, creating negative pressure in the negative pressure chamber 304. When the second pressure regulating hole 311 connects with the V-shaped flow channel 702 in the directional roller 701, the external airflow passes through the V-shaped flow channel 702 and enters the negative pressure chamber 304, then enters the negative pressure dust collector 2 through the acceleration tube 402, thereby sucking up the dust settled on the ground. During the spraying operation, the directional roller 701 is rotated, and the bottom hole of the V-shaped flow channel 702 faces diagonally forward, thus creating negative pressure dust collection. Box 2 sucks up the dust stirred up by the airflow during the front-end spraying process and accelerates the airflow on the paint surface to improve the drying speed of the paint. When the spraying area is full, it is necessary to expand the spraying area. The negative pressure box 3 is moved backward by the drive frame 6. By rotating the directional roller 701, the bottom hole of the V-shaped flow channel 702 is oriented to the rear, sucking up the dust accumulated on the ground, thereby improving the surface smoothness and improving the construction quality of the hydrophobic coating. During the alternation process, the airflow direction in the V-shaped flow channel 702 is opposite, thereby playing a backflushing role and effectively preventing the blockage in the V-shaped flow channel 702.

[0024] Furthermore, a rotating shaft 703 is provided on the side end face of the directional roller 701, and a third motor 704 is fixedly installed on the outer end face of the sealing cover 301 to drive the rotating shaft 703. A pressure-stabilizing guide groove 313 extending axially along the directional roller 701 is provided on the top of the arc-shaped adjustment groove 312, and an electric heating wire 705 is provided inside the directional roller 701.

[0025] Since the number of V-shaped channels 702 is much larger than that of the second pressure regulating hole 311, the gas drawn in by the V-shaped channels 702 is guided to the second pressure regulating hole 311 through the pressure stabilizing guide groove 313, so that the airflow enters the negative pressure chamber 304 evenly. The adjusting roller 701 is heated by the heating wire 705, thereby heating the airflow entering the negative pressure chamber 304. The hot airflow heats the small amount of suspended coating material drawn in, so that it hardens and dries quickly, reduces the stickiness of the waste residue, and avoids clogging the filter screen after being drawn into the vacuum cleaner 1.

[0026] Furthermore, the airflow regulating plate 305 is installed on the bottom upper surface of the negative pressure chamber 304 and is slidably connected to the sealing cover 301. The bottom upper surface of the sealing cover 301 is provided with a wire protrusion that fits against the airflow regulating plate 305. The airflow regulating plate 305 is provided with a first pressure regulating hole 306 corresponding to the position of the second pressure regulating hole 311. A second motor 307 is provided inside the negative pressure chamber 304. A rack 309 is provided on the upper surface of the airflow regulating plate 305. A third gear 308 that meshes with the rack 309 is provided on the output shaft of the second motor 307.

[0027] The third motor 704 engages with the third gear 308 and the rack 309 to drive the airflow regulating plate 305 to slide along the guide convex strip 310, thereby adjusting the relative position of the first pressure regulating hole 306 and the second pressure regulating hole 311. When the first pressure regulating hole 306 and the second pressure regulating hole 311 are completely aligned, the flow channel is fully opened. When the first pressure regulating hole 306 and the second pressure regulating hole 311 are completely misaligned, the bottom suction is completely closed, thereby adjusting the negative pressure value of the bottom suction.

[0028] Furthermore, the collar 501 is sleeved on the acceleration tube 402 and rotatably connected to it. The cleaning rod 502 is fixedly installed on the collar 501. The outer end face of the cleaning rod 502 is provided with a flexible scraper 504 that fits against the inner end face of the acceleration tube 402. The first fan blade 503 is evenly installed on the front end face of the collar 501.

[0029] When the airflow passes through the accelerator tube 402 and impacts the reflector plate 303 before returning to the exhaust tube 302, the airflow blows the first fan blade 503, causing the collar 501 to rotate under the action of the first fan blade 503. This causes the scraper on the surface of the cleaning rod 502 to scrape the inner end face of the accelerator tube 402, thereby preventing the coating from adhering to the inner end face of the accelerator tube 402, which would result in insufficient airflow spiral speed and affect the particle centrifugation effect.

[0030] Furthermore, an inner stabilizing ring 505 is provided at the end of the sweeping rod 502, and a second fan blade 506 is evenly provided on the front end face of the inner stabilizing ring 505. The sweeping rod 502 has a spiral structure, and the spiral angle of the sweeping rod 502 is the same as the spiral angle of the spiral guide groove 405. The inner end face of the acceleration tube 402 and the front end face of the reflector 303 are coated with an ultra-hydrophobic coating.

[0031] The spiral cleaning bar 502 structure allows it to fit more closely with the spiral guide groove 405, and the rotation of the rotary cleaner 5 can also promote the formation of spiral airflow. The inner stabilizing ring 505 reinforces the cleaning bar 502 to prevent it from shaking. The second fan blade 506 increases the rotation speed of the rotary cleaner 5 and improves the cleaning effect. The super-dual-hydrophobic coating can effectively prevent stains from adhering to the inner end face of the equipment and can easily sweep off the attached stains.

[0032] Furthermore, a drive frame 6 is provided at the bottom of the negative pressure box 3. The drive frame 6 includes a support frame 601, a drive shaft 602, a roller 603, and a first motor 604. The first motor 604 is fixedly mounted on the support frame 601 to drive the drive shaft 602. The roller 603 is mounted on the bottom of the support frame 601 and rotatably connected to it. A second gear 606 is provided on the side end face of the roller 603. A first gear 605 that meshes with the second gear 606 is provided on the drive shaft 602.

[0033] The first motor 604 drives the drive shaft 602 to rotate, and the first gear 605 and the second gear 606 mesh to drive the roller 603 to rotate, thereby moving the negative pressure box 3 back and forth. After the area is sprayed, it automatically retreats. During the retreat, the bottom suction component 7 adsorbs and removes dust from the ground, improving the spraying effect.

[0034] Furthermore, a waste collection chamber 314 is formed between the reflector 303 and the negative pressure box 3. The bottom of the waste collection chamber 314 is provided with a slag discharge baffle 315 that is rotatably connected by a hinge. The bottom and top of the reflector 303 are inclined structures.

[0035] The reflector 303 guides the solid particles impacting the reflector 303 to the slag discharge baffle 315, separating the airflow from the waste residue. After the work is completed, the slag discharge baffle 315 is opened to clean the waste collection chamber 314.

[0036] Example 2 Please see Figures 1-11 A method for using a dust control device during the application of a superhydrophobic coating includes the following steps: Step 1, Equipment Debugging and Negative Pressure Establishment: Connect the vacuum cleaner 1 to the sealing cover 301 of the negative pressure dust collection box 2 through the corrugated pipe. After checking the sealing of each component connection, start the vacuum cleaner 1 to quickly form a stable negative pressure environment inside the negative pressure box 3. At this time, the external airflow passes through the front panel 401 of the dust collection panel 4 under the action of negative pressure and enters the acceleration tube 402. When the airflow flows through the spiral guide groove 405 in the acceleration tube 402, it forms a high-speed spiral airflow. The dust particles generated during construction and the paint droplets that are not completely dried are simultaneously sucked in. The spiral airflow drives the dust and paint mixture to separate from the main airflow under the action of centrifugal force and hit the reflector plate 303 installed on the inner end face of the spiral guide groove 405. The inclined structure of the reflector plate 303 guides the mixture to slide down along the plate surface and finally collect it into the waste collection chamber 314 formed between the reflector plate 303 and the negative pressure box 3, realizing the initial separation of gas and solid and laying the foundation for subsequent dust removal operations.

[0037] Step 2, Rotary Sweeping and Anti-Adhesion Guarantee: As the airflow continuously passes through the acceleration tube 402, the airflow impacts the reflector plate 303 and then returns to the extraction tube 302, blowing the first blade 503 on the front end of the rotary sweeper 5 ring 501. This causes the ring 501 to rotate around the acceleration tube 402, which in turn drives the sweeping rod 502 fixed on the ring 501 to rotate synchronously. The sweeping rod 502 adopts a spiral structure with the same spiral angle as the spiral guide groove 405. The flexible scraper 504 on its outer end face is in close contact with the inner end face of the acceleration tube 402. During the rotation, it thoroughly scrapes away the attached paint and dust. At the same time, the inner stabilizing ring 505 at the end of the sweeping rod 502 enhances the structural stability and prevents shaking. The second blade 506 on the front end face of the inner stabilizing ring 505 further increases the rotation speed. Combined with the super-dual-hydrophobic coating on the inner end face of the acceleration tube 402 and the front end face of the reflector plate 303, it effectively prevents stains from adhering, ensures the stability of the spiral airflow velocity, and guarantees the centrifugal separation effect of particles.

[0038] Step 3, Coordinated Orientation Suction and Airflow Heating: Based on the real-time situation of the superhydrophobic coating spraying area, the third motor 704 drives the shaft 703 of the orienting roller 701 to rotate, adjusting the angle of the orienting roller 701 within the arc-shaped adjustment groove 312. During spraying, the bottom hole of the V-shaped flow channel 702 is oriented diagonally forward to precisely suction the dust stirred up by the airflow during the front-end spraying process, while simultaneously accelerating the airflow on the coating surface and improving the drying speed. When the spraying area is full and needs to be expanded, the drive frame 6 moves the negative pressure box 3 backward, simultaneously... The bottom of the V-shaped flow channel 702 is turned to the rear to efficiently suck up dust from the ground and improve the surface smoothness. Since there are more V-shaped flow channels 702 than the second pressure regulating hole 311, the sucked gas is guided to the second pressure regulating hole 311 through the pressure stabilizing guide groove 313, so that the airflow enters the negative pressure chamber 304 evenly. At the same time, the electric heating wire 705 in the directional roller 701 is activated to heat up the airflow entering the negative pressure chamber 304. The hot airflow acts on the small amount of suspended coating sucked in, so that it quickly hardens and dries into small particles, reducing the stickiness of the waste residue and preventing clogging of the vacuum cleaner 1 filter.

[0039] Step 4: Synchronization of Negative Pressure Adjustment and Mobile Dust Removal: Start the second motor 307. The third gear 308 on the output shaft meshes with the rack 309 on the upper surface of the airflow regulating plate 305, causing the airflow regulating plate 305 to slide along the guide protrusion 310 at the bottom of the sealing cover 301. By adjusting the relative overlap between the first pressure regulating hole 306 and the second pressure regulating hole 311, the bottom suction negative pressure value is precisely adjusted. When they are completely overlapped, the flow channel is fully open, maximizing the negative pressure; when they are completely misaligned, the bottom suction is closed, meeting the needs of different construction scenarios. At the same time, start the drive... The first motor 604 on the moving frame 6 drives the drive shaft 602 to rotate. The first gear 605 meshes with the second gear 606 on the side end face of the roller 603, driving the roller 603 to rotate, thereby realizing the back-and-forth movement of the negative pressure dust collection box 2. During the spraying operation, the equipment moves synchronously with the spraying progress, and the bottom suction component 7 continuously sucks up the dust falling in the construction area. After the area is sprayed, the equipment automatically retreats. During the retreat, the bottom suction component 7 continuously adsorbs and removes dust from the ground to ensure that there is no dust residue in the construction area and improves the construction quality of the hydrophobic coating.

[0040] Step 5, Finishing Operation and Waste Cleaning: After the superhydrophobic coating is applied, first turn off the vacuum cleaner 1 to stop the negative pressure suction. Then, turn off the second motor 307, the third motor 704, and the heating wire 705 in sequence. After the equipment has completely stopped, open the slag discharge baffle 315 through the hinge at the bottom of the waste collection chamber 314 to collect and clean out the dust, hardened waste, and other waste materials. After cleaning, check whether there are any residual stains on key components such as the acceleration tube 402, the V-shaped flow channel, and the negative pressure chamber 304 to prepare for the next use. The whole process realizes a closed-loop operation of dust control, waste collection, and equipment maintenance. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust control device for superhydrophobic coating construction, comprising a vacuum cleaner (1) and a negative pressure dust collection box (2), wherein the vacuum cleaner (1) is connected to the top of the negative pressure dust collection box (2) through a corrugated pipe, characterized in that: The negative pressure dust collection box (2) includes a negative pressure box (3), a dust collection panel (4), a rotary cleaner (5), and a bottom suction assembly (7); The negative pressure box (3) includes a sealing cover (301), a reflector (303) and an airflow regulating plate (305). The dust collection panel (4) includes a front panel (401), an acceleration tube (402) and a partition (406). The rotary cleaner (5) includes a collar (501), a cleaning rod (502) and a first fan blade (503). The rotary cleaner (5) is movably mounted on the acceleration tube (402) to clean its inner end face. The bottom suction assembly (7) includes a directional roller (701), a heating wire (705) and a third motor (704). The bottom suction assembly (7) is mounted at the lower end of the airflow regulating plate (305).

2. The dust control device during the construction process of a superhydrophobic coating as described in claim 1, characterized in that: The back of the front panel (401) is provided with an acceleration tube (402) that communicates with the negative pressure box (3). The inner end face of the acceleration tube (402) is provided with a spiral guide groove (405). The reflector (303) is installed on the inner end face of the spiral guide groove (405).

3. The dust control device during the construction process of a superhydrophobic coating as described in claim 1, characterized in that: The partition (406) is sleeved on the acceleration tube (402). A negative pressure cavity (304) is formed between the partition (406), the sealing cover (301), and the front panel (401). The middle part of the acceleration tube (402) is recessed inward to form a throat (403). The bottom of the throat (403) is provided with a suction hole (404) that communicates with the negative pressure cavity (304). The bottom of the negative pressure cavity (304) is provided with an arc-shaped adjustment groove (312) for installing the directional roller (701). The top of the arc-shaped adjustment groove (312) is provided with a second pressure adjustment hole (311) that communicates with the negative pressure cavity (304). V-shaped flow channels (702) are uniformly arranged along the axial direction inside the directional roller (701).

4. The dust control device during the construction process of a superhydrophobic coating as described in claim 3, characterized in that: The side end face of the directional roller (701) is provided with a rotating shaft (703). The third motor (704) is fixedly installed on the outer end face of the sealing cover (301) to drive the rotating shaft (703). The top of the arc-shaped adjustment groove (312) is provided with a pressure-stabilizing guide groove (313) extending along the axial direction of the directional roller (701). The directional roller (701) is provided with an electric heating wire (705).

5. The dust control device during the construction process of a superhydrophobic coating as described in claim 3, characterized in that: The airflow regulating plate (305) is installed on the bottom upper surface of the negative pressure chamber (304) and is slidably connected to the sealing cover (301). The bottom upper surface of the sealing cover (301) is provided with a wire protrusion that fits against the airflow regulating plate (305). The airflow regulating plate (305) is provided with a first pressure regulating hole (306) corresponding to the position of the second pressure regulating hole (311). The negative pressure chamber (304) is provided with a second motor (307). The upper surface of the airflow regulating plate (305) is provided with a rack (309). The output shaft of the second motor (307) is provided with a third gear (308) that meshes with the rack (309).

6. The dust control device during the construction process of a superhydrophobic coating as described in claim 2, characterized in that: The collar (501) is sleeved on the acceleration tube (402) and rotatably connected thereto. The cleaning rod (502) is fixedly installed on the collar (501). The outer end face of the cleaning rod (502) is provided with a flexible scraper (504) that fits against the inner end face of the acceleration tube (402). The first fan blade (503) is evenly installed on the front end face of the collar (501).

7. The dust control device during the construction process of a superhydrophobic coating as described in claim 6, characterized in that: The cleaning rod (502) is provided with an inner stabilizing ring (505) at its end. The front end face of the inner stabilizing ring (505) is uniformly provided with a second fan blade (506). The cleaning rod (502) has a spiral structure, and the spiral angle of the cleaning rod (502) is the same as the spiral angle of the spiral guide groove (405). The inner end face of the acceleration tube (402) and the front end face of the reflector plate (303) are coated with an ultra-dual hydrophobic coating.

8. The dust control device during the construction process of a superhydrophobic coating as described in claim 1, characterized in that: The bottom of the negative pressure box (3) is provided with a drive frame (6). The drive frame (6) includes a support frame (601), a drive shaft (602), a roller (603) and a first motor (604). The first motor (604) is fixedly installed on the support frame (601) to drive the drive shaft (602). The roller (603) is installed on the bottom of the support frame (601) and rotatably connected to it. The side end face of the roller (603) is provided with a second gear (606). The drive shaft (602) is provided with a first gear (605) that meshes with the second gear (606).

9. The dust control device during the construction process of a superhydrophobic coating as described in claim 1, characterized in that: A waste collection chamber (314) is formed between the reflector (303) and the negative pressure box (3). The bottom of the waste collection chamber (314) is provided with a slag discharge baffle (315) that is rotatably connected by a hinge. The bottom and top of the reflector (303) are inclined structures.

10. A method of using a dust control device during the construction of a superhydrophobic coating, applicable to the dust control device during the construction of a superhydrophobic coating as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1, Equipment debugging and negative pressure establishment: Connect the vacuum cleaner (1) to the negative pressure box (3) of the negative pressure dust collection box (2) through the corrugated pipe. After checking the sealing status, start the vacuum cleaner (1) to quickly form a stable negative pressure in the negative pressure box (3). The dust and paint droplets generated during construction are sucked in through the vacuum panel (4) and initially collected into the negative pressure box (3) to complete the basic work of gas-solid separation. Step 2, Rotary cleaning and anti-adhesion protection: During the negative pressure suction process, the airflow drives the rotary cleaner (5) to rotate and clean the relevant areas of the dust collection panel (4) and the acceleration tube (402) through the cleaning rod (502) to prevent dust and paint from adhering, ensure smooth airflow channels, and ensure stable dust removal efficiency. Step 3, Adjusting suction and airflow coordination: According to the needs of the spraying area, the suction direction is adjusted by the bottom suction component (7). When spraying, the dust falling in front is suctioned, and when the area is expanded, the dust on the ground behind is suctioned, so as to achieve accurate dust capture at different construction stages and improve the cleanliness of the construction environment. Step 4, Negative pressure adjustment and mobile dust removal are synchronized: The negative pressure intensity is adjusted by the airflow regulating plate (305) to adapt to different dust removal scenarios, so as to realize the simultaneous spraying and dust removal, and ensure that there is no dust residue in the construction area; Step 5, Finishing and cleaning up waste: After the construction is completed, turn off the vacuum cleaner (1) and related components, open the waste collection structure of the negative pressure dust collector (2), clean up the collected dust and waste, check and clean the key parts of the equipment, and prepare for the next use.

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